Java - Ayuda creación jar con makefile

JAVAC=/usr/local/jdk/bin/javac

JAR=/usr/local/jdk/bin/jar

sources = $(wildcard *.java)

classes = $(sources:.java=.class)

.SUFFIXES: .java .class

.java.class:

	$(JAVAC) $*.java

all: clean MyJar.jar

MyJar.jar: $(classes)

	@echo "Manifest-Version: 1.0" > manifest.txt

	@echo "Class-Path: ." >> manifest.txt

	@echo "Main-Class: Main" >> manifest.txt

	@echo "" >> manifest.txt

	$(JAR) -cmf manifest.txt MyJar.jar $(classes)

clean:

	$(RM) MyJar.jar *.class